竹叶状ZnS纳米带的生成与表征  

Formation and Characterization of ZnS Nanobelts with Bamboo Leaf-like Morphology

作　　者：武祥[1] 隋解和[1] 蔡伟[1] 

机构地区：[1]哈尔滨工业大学材料科学与工程学院,哈尔滨150001

出　　处：《固体电子学研究与进展》2008年第2期159-161,166,共4页Research & Progress of SSE

基　　金："973"计划国家基础研究项目(2006CB708609);哈尔滨工业大学创新基金(HITNSFIF2008341)

摘　　要：通过无催化物理热蒸发ZnS粉末的方法成功地制备了一种新颖的竹叶状ZnS纳米带。X射线衍射分析和扫描电镜透射电子显微镜,用来对ZnS生长物进行表征,检测显示,所制得的竹叶状纳米带的厚度50～100nm,度宽500～600nm,长度数十微米。透射电镜和选区电子衍射花样表明,制备的纳米带是单晶六角纤锌矿结构。样品的光学性能显示在424nm处有一个强烈的蓝光发射,这种发射是由于氧空位和其他表面态造成的。同时对纳米带的生长机制作了论述。A kind of novel ZnS nanobelts with bamboo leaf-like morphology were formed by thermal ZnS powder. As-grown ZnS products were characterized with X-ray diffraction （XRD）, scanning electron microscopy （SEM）, transmission electron microscopy （TEM）,high resolution transmission electron microscopy （HRTEM）. As-grown bamboo-like ZnS nanobelts are 50 to 100 nm in thickness,500 to 600 nm in width,and tens of micrometers in length. TEM and SAED （selected area electron diffraction） results show as-grown ZnS nanobelts have hexagonal wurtzite structure. Room-temperature photoluminescence measurement shows that the formed ZnS nanostructures have a strong blue emission peak at a wavelength of 424 nm, w.hich can be attributed to deep-level emissions induced by defeats and other surface states. The growth mechanism of asgrown nanobelts is also discussed.

关 键 词：硫化锌 纳米带 半导体 表征 

分 类 号：TN304.05[电子电信—物理电子学]